53287985 has 8 divisors (see below), whose sum is σ = 64846656. Its totient is φ = 42029680.

The previous prime is 53287967. The next prime is 53287999. The reversal of 53287985 is 58978235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-53287985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74699 + ... + 75408.

It is an arithmetic number, because the mean of its divisors is an integer number (8105832).

Almost surely, 2^53287985 is an apocalyptic number.

It is an amenable number.

53287985 is a deficient number, since it is larger than the sum of its proper divisors (11558671).

53287985 is a wasteful number, since it uses less digits than its factorization.

53287985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150183.

The product of its digits is 604800, while the sum is 47.

The square root of 53287985 is about 7299.8619849967. The cubic root of 53287985 is about 376.3076952616.

The spelling of 53287985 in words is "fifty-three million, two hundred eighty-seven thousand, nine hundred eighty-five".